Main Functions SiUS091133
33 Function and Control
1.5 Program Dry Operation
Outline Program dry operation removes humidity while preventing the room temperature from lowering.
Since the microcomputer controls both the temperature and airflow rate, the temperature
adjustment and [FAN] setting buttons are inoperable.
Detail The microcomputer automatically sets the temperature and airflow rate. The difference between
the room thermistor temperature at start-up and the target temperature is divided into two zones.
Then, the unit operates in an appropriate capacity for each zone to maintain the temperature and
humidity at a comfortable level.
Room thermistor
temperature at start-up
Target temperature
X
Thermostat OFF point
Y
Thermostat ON point
Z
24°C (75.2°F) or more
Room thermistor
temperature at start-up
X
– 2.5°C (–4.5°F)
X – 0.5°C (– 0.9°F)
or
Y + 0.5°C (0.9°F) (zone
B) continues for 10 min.
23.5°C (74.3°F)
X – 2.0°C (–3.6°F)
X – 0.5°C (– 0.9°F)
or
Y + 0.5°C (0.9°F) (zone
B) continues for 10 min.
~
18°C (64.4°F)
18°C (64.4°F) X
– 2.0°C (–3.6°F)
X – 0.5°C (– 0.9°F) = 17.5°C (63.5°F)
or
Y + 0.5°C (0.9°F) (zone
B) continues for 10 min.
17.5°C (63.5°F)
~
Z
X
Y
Zone B
Zone B
Zone A = Thermostat OFF
Zone C = Thermostat ON
+ 0.5˚C (0.9˚F)
(R11587)
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